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in order from oldest to present, what are the three eras of geologic time?
3 Answers
- ?Lv 76 years ago
There are actually 9 eras. From oldest to youngest, they are the following:
Early Archean
Middle Archean
Late Archean
Early Proterozoic
Middle Proterozoic
Late Proterozoic
Paleozoic
Mesozoic
Cenozoic
The last three only account for about 12% of Earth history.
There is actually an earlier era than the Early Archean, but it has not been officially named because there are no examples of the rock from that era.
